The CleanAir Method 3 sample pump includes a Teflon coated single head sample pump mounted in a rugged metal housing. The sample pump includes a 0.5 to 10.0 LPM flow meter with a stainless steel valve, replaceable in-line filter, front panel mounted on/off switch and circuit breaker. The inlet and outlet of the sample pump have 1/4" SS compression fittings.